#12598A
Closest named color: Light Navy Blue (#2E5A88). oklch(44.8% 0.104 245), rgb(18, 89, 138).
Aa
White text reads best on this color (7.44:1).
About this color
#12598A is a dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.104 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.020 away. White text reads best on it, at 7.44:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.82:1 |
| White text | 7.44:1 |
Values
| HEX | #12598A |
| RGB | rgb(18, 89, 138) |
| HSL | hsl(205, 77%, 31%) |
| OKLCH | oklch(44.8% 0.104 245) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #12598A | 7.44:1 | AAA | Lc -90.3 | Preferred for body text |
| Black text on #12598A | 2.82:1 | Fails | Lc 18.6 | Dividers and decoration only |
| #12598A text on white | 7.44:1 | AAA | Lc 85.4 | Fine for body text |
| #12598A text on black | 2.82:1 | Fails | Lc -16.6 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 800.
-
Step 50
50
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C7DCEE
oklch(88.4% 0.034 244)
-
Step 300
300
#A0C5E6
oklch(80.8% 0.061 245.6)
-
Step 400
400
#6BA7D9
oklch(70.7% 0.097 244.9)
-
Step 500
500
#3E90CF
oklch(63.1% 0.124 244.9)
-
Step 600
600
#1079BC
oklch(55.6% 0.135 244.8)
-
Step 700
700
#0065A1
oklch(49% 0.124 245.1)
-
Step 800
800 (this color)
#12598A
oklch(44.8% 0.104 245)
-
Step 900
900
#144569
oklch(37.7% 0.08 244.8)
-
Step 950
950
#0E293E
oklch(27.2% 0.051 244.9)
#12598A with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #425B8C | 0.043 |
| Deuteranopia (no green cones) | #315089 | 0.032 |
| Tritanopia (no blue cones) | #00656B | 0.072 |
| Achromatopsia (no color) | #555555 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #12598A
#12598A
oklch(44.8% 0.104 245)
- #7A4700
#7A4700
oklch(44.8% 0.101 65.1)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #12598A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.020
- Deep Sea Blue #015482 ΔE 0.021
- Dusk Blue #26538D ΔE 0.022
- Light Navy #155084 ΔE 0.027
- Denim Blue #3B5B92 ΔE 0.038
- Peacock Blue #016795 ΔE 0.042
- Denim #3B638C ΔE 0.048
- YInMn Blue #415A77 ΔE 0.050
Use #12598A in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.